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Prevent the usage of invalid best_mode_index

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This commit changed the initialization of best_mode_index to -1 to make
sure it is not mistakenly used for mode masking.

Change-Id: I75b05db51466070dd23c4ee57a4d4b40764dc019
This commit is contained in:
Yaowu Xu 2014-04-09 17:32:48 -07:00
parent 2dc92482d0
commit 1dcc1aa942
1 changed files with 6 additions and 4 deletions
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10
vp9/encoder/vp9_rdopt.c
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@ -3147,7 +3147,7 @@ int64_t vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
int64_t best_filter_rd[SWITCHABLE_FILTER_CONTEXTS];
int64_t best_filter_diff[SWITCHABLE_FILTER_CONTEXTS];
MB_MODE_INFO best_mbmode = { 0 };
int mode_index, best_mode_index = 0;
int mode_index, best_mode_index = -1;
unsigned int ref_costs_single[MAX_REF_FRAMES], ref_costs_comp[MAX_REF_FRAMES];
vp9_prob comp_mode_p;
int64_t best_intra_rd = INT64_MAX;
@ -3304,7 +3304,7 @@ int64_t vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
// Look at the reference frame of the best mode so far and set the
// skip mask to look at a subset of the remaining modes.
if (mode_index == mode_skip_start && best_rd < INT64_MAX) {
if (mode_index == mode_skip_start && best_mode_index >= 0) {
switch (vp9_mode_order[best_mode_index].ref_frame[0]) {
case INTRA_FRAME:
break;
@ -3341,6 +3341,7 @@ int64_t vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
comp_pred = second_ref_frame > INTRA_FRAME;
if (comp_pred) {
if ((mode_search_skip_flags & FLAG_SKIP_COMP_BESTINTRA) &&
best_mode_index >=0 &&
vp9_mode_order[best_mode_index].ref_frame[0] == INTRA_FRAME)
continue;
if ((mode_search_skip_flags & FLAG_SKIP_COMP_REFMISMATCH) &&
@ -3368,7 +3369,8 @@ int64_t vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
// one of the neighboring directional modes
if ((mode_search_skip_flags & FLAG_SKIP_INTRA_BESTINTER) &&
(this_mode >= D45_PRED && this_mode <= TM_PRED)) {
if (vp9_mode_order[best_mode_index].ref_frame[0] > INTRA_FRAME)
if (best_mode_index >= 0 &&
vp9_mode_order[best_mode_index].ref_frame[0] > INTRA_FRAME)
continue;
}
if (mode_search_skip_flags & FLAG_SKIP_INTRA_DIRMISMATCH) {
@ -3656,7 +3658,7 @@ int64_t vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
break;
}
if (best_rd >= best_rd_so_far)
if (best_mode_index < 0 || best_rd >= best_rd_so_far)
return INT64_MAX;
// If we used an estimate for the uv intra rd in the loop above...